Light: All varieties of Rudbeckia will thrive in full sun. However, some varieties, especially the Sweet Black-eyed Susan (Rudbeckia subtomentosa) and the perennial black-eyed Susan (Rudbeckia 'Goldsturm') will also take partial shade. Soil: All Rudbeckias tolerate a wide range of soil types, from clay to loam.

How many years do Black Eyed Susans last?

Some Black Eyed Susan varieties are perennials such as Rudbeckia fulgida which means they will come back every year. Other varieties are annuals such as Rudbeckia hirta which means the plants only last one year and will not come back.

Does Black Eyed Susan come back every year?

Perennials. One of the most popular perennial rudbeckias is R. fulgida 'Goldsturm'. It is one of the most dependable of all perennial plants and it has just about everything going for it: toughness, ease of cultivation, and a long flowering period.

Do Black Eyed Susans spread easily?

On average, black-eyed Susan plants grow 24 to 36 inches tall and wide. If plants are happy, they can spread somewhat aggressively with underground stems and self-sowing. Limit the spread by dividing clumps every four to five years. Snipping spent blooms in fall prevents self-seeding.

How often should Black Eyed Susans be watered?

PLANT HEIGHT AND WIDTH These grow about 24 to 30 inches tall and 18 to 24 inches wide. WATER Water upon planting and once a week in the summer. They require less than average water needs and become drought tolerant after established.

Black Eyed Susan, Rudbeckia Hirta - Comprehensive Grow and Care Guide

25 related questions found

Will Black Eyed Susans grow in shade?

Light: All varieties of Rudbeckia will thrive in full sun. However, some varieties, especially the Sweet Black-eyed Susan (Rudbeckia subtomentosa) and the perennial black-eyed Susan (Rudbeckia 'Goldsturm') will also take partial shade. Soil: All Rudbeckias tolerate a wide range of soil types, from clay to loam.

Why is my black-eyed Susan dying?

Bacterial leaf spot, caused by the bacteria known as pseudomonas and xanthomonads, can cause the leaves of a black-eyed Susan to die. Fungal leaf spot can be caused by a variety of pathogens. Septoria leaf spot is also caused by a fungus.

Where is the best place to plant black-eyed Susans?

Where to Plant Black-Eyed Susans. Black-eyed Susans grow best in full sun (at least 6 to 8 hours per day). They can tolerate some shade, but you might eventually find them stretching and spreading toward the light.

Do black-eyed Susans flower the first year?

The black-eyed Susan grows to be about 3 feet tall (about 1 m) with bright yellow ray flowers that are 2 to 3 inches wide and have small, dark brown spherical centers. Don't worry if your black-eyed Susan seeds do not produce flowers the first year! They typically bloom in the summer and fall of the second year.

What pairs with black-eyed Susans?

Companion plants for this garden favorite are almost too many to list, but a few ready and reliable choices include zinnias, globe thistle, sedum, perennial hibiscus, echinacea, joe-pye weed, and ornamental grasses. The yellow and golden colors look nice near shrubs with darker foliage, like smokebush and elderberry.

How do you winterize black-eyed Susans?

Cut back the stalks of perennial black-eyed susans in the late autumn after the plant has wilted to the ground if you prefer a cleaner flowerbed over the winter. Cut the stalks so that 4 inches of stalks extend out from the bottom-most basal leaves of the plants.

Do you prune black-eyed Susans?

Cutting back the black-eyed Susans can reward you with blooms throughout the growing season. Trim back the flower stems in summer after the blossoms begin to wilt. Cut the stems off ¼ inch above the topmost leaf. Plants that are cut back may flower a second time in the fall.

What month do black-eyed Susans bloom?

As they drink the nectar, they move pollen from one plant to another, causing it to grow fruits and seeds that can move about easily with the wind. These plants bloom from June to October. Note that they can be territorial in that they tend to squash out other flowers growing near them.

What animal eats black-eyed Susans?

Black-eyed Susan represents important source of food and shelter for many birds and animals (slugs, rabbits and deer like to eat this plant). Silvery Checkerspot butterfly lays eggs on the black-eyed Susan (leaves represent basic source of food for the caterpillars after hatching).

Are black-eyed Susans perennial?

No wildflower garden is complete without some Black Eyed Susan somewhere in the border. This robust perennial will turn heads wherever planted and withstand more heat and drought than most. This favourite blooms from July through to September and is an Ontario native plant. ... Blooms well in full sun or light shade.

What is the difference between a sunflower and a black eyed Susan?

Sunflowers Are Larger

Black-eyed Susans have small, raised discs in the center of flowerheads, while sunflowers have larger, flatter discs. Sunflowers also have wide, large leaves that are rough to the touch and triangular, while black-eyed Susans have narrow, oblong or lance-shaped leaves.

Do bunnies eat black-eyed Susans?

It should be no surprise that plants with a strong fragrance or fuzzy leaves like lavender and black-eyed Susan are less popular with rabbits. Unfortunately, these plants will not deter them completely. Rabbits grazing in your flower beds will simply eat around the less enticing plants.

What does the Black Eyed Susan symbolize?

What does the black eyed Susan symbolize? Black-eyed Susans are considered a symbol of encouragement and motivation, which can be attributed to the plant's adaptability and widespread availability.

Why didn't My black-eyed Susans come back?

Black Eyed-Susans do not do well in very dry areas or in very wet/moist areas. In order to bloom they need fertilizer. ... Do not fertilize now, but fertilize the plants that did not bloom next spring and see what happens. Another possibility is that the clump is too large which can affect flowering.

Are coneflowers and black-eyed Susans the same thing?

Purple coneflowers (Echincea purpurea) and black-eyed Susans (Rudbeckia fulgida) are sometimes both called coneflowers, but the two are distinct species. Both are perennials -- which means they live year after year -- and both are wildflowers native to forests, prairies and meadows of eastern North America.

Are Black Eyed Susan an annual or perennial?

Black-Eyed Susan Vine, also known as Clock Vine, is a unique, quick-growing annual that delights with large, bright orange blooms on tall, vining foliage. Perfect for trellises and fences! Annual.

Should Black Eyed Susans be cut back in the fall?

Cut off faded and wilted Black Eyed Susan blooms throughout the growing season to keep the plant tidy and in control. ... In autumn, cut Black Eyed Susan back to about 4” tall (10 cm.) or, if you wouldn't mind a few more Black Eyed Susan plants, let the last blooms go to seed for the birds.

How much sun does a Rudbeckia need?

Rudbeckia species have an average growth rate and prefer full sun (greater than 6 hours of direct sunlight) but will tolerate partial shade. Rudbeckia prefer evenly moist, well-drained soils, but they are drought and heat tolerant once established.

What flowers bloom all summer in the shade?

17 Best Shade Loving Perennials That Bloom All Summer

• Geraniums – Pelargonium. ...
• Lungwort – Pulmonaria officinalis.
• Primrose – Primula vulgaris.
• Bluestar – Amsonia.
• Bleeding Heart – Lamprocapnos.
• False goat's beard – Astilbe.
• Barrenwort (Fairy Wings) – Epimedium.
• Monkshood or Wolf's Bane – Aconitum.

How many black eyed Susan vines do you put in a planter?

How many Black-eyed Susan vines do you put in a planter? In your average sized hanging basket (10-12") you would plant 2-3 single plants. In larger urns you would plant 4-5 depending on the size of your container.